Tuna Sesame Rice Balls

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Tuna rice balls come together easily by mixing sushi rice, canned tuna, sesame oil, Japanese mayo, and roasted seaweed. The mixture is creamy, savory, and lightly fragrant from sesame oil, with the seaweed adding texture and flavor. Once shaped into tight balls, they’re ready to enjoy right away—soft, flavorful, and satisfying. Perfect for a quick lunch, snack, or a light dinner, especially served fresh for the best taste and texture. They can be enjoyed solo or as part of a larger meal, capturing the essence of classic Japanese comfort food.

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Updated on Fri, 20 Jun 2025 18:44:00 GMT
A bowl of rice balls with seaweed on top. Pin it
A bowl of rice balls with seaweed on top. | tastygusto.com

These tuna rice balls have become my go to snack for busy afternoons and last minute lunches They offer comforting layers of creamy tuna and savory seaweed wrapped in softly seasoned sushi rice Each bite packs a combination of satisfying flavors and textures that always hits the spot

I whipped these up the first time when I needed a portable lunch for a park outing and now I find myself making them anytime I want something tasty without much effort My family asks for them on road trips too

Ingredients

  • Sushi rice: Brings the signature chewy stickiness keep it warm when mixing for easier shaping choose short grain for best results
  • Canned tuna: Offers protein and a satisfying savory flavor opt for tuna in oil for maximum richness
  • Sesame oil: Adds nutty undertones and a hint of warmth look for pure toasted sesame oil for depth
  • Japanese mayonnaise: Creates creaminess and that signature tangy sweetness Kewpie is extra smooth but any quality mayo works
  • Torn roasted seaweed: Delivers bursts of umami and crunch choose crisp sheets that snap easily for the freshest flavor

Step-by-Step Instructions

Combine the Base:
Add warm sushi rice sesame oil Japanese mayonnaise canned tuna and torn roasted seaweed to a large mixing bowl ensuring all ingredients are fully incorporated Use a wide spatula or rice paddle to gently fold and toss so the rice stays fluffy If the mixture feels too dry mix in more mayo until the rice clings together smoothly
Portion the Mixture:
Press the blended mixture gently into the bowl to create a flat even layer With a silicone or wooden spatula divide the surface into eight sections similar to slicing a pizza For those who prefer a quick shortcut just eyeball even scoops by using a large spoon or measuring cup
Shape the Rice Balls:
Wet your hands or use food safe gloves to prevent sticking Scoop up each portion and gently press and roll into a ball The pressure should be firm enough that the ball holds together but gentle enough so the rice is not compacted into a heavy clump Take care that the nori is evenly distributed within each ball for a little seaweed in every bite
Serve Fresh and Enjoy:
Arrange the rice balls on a platter or pack them in a lunchbox Serve them at room temperature for the best texture and flavor If making ahead wrap each ball in plastic wrap to keep them moist and fresh for hours
A bowl of rice with seaweed on top. Pin it
A bowl of rice with seaweed on top. | tastygusto.com

Seaweed is my favorite part of this snack I love the salty aroma and how it transforms plain rice into something special My kids love helping to tear and sprinkle the nori all over the bowl which always turns into a fun family assembly line

Storage Tips

To keep rice balls soft wrap each one tightly in plastic wrap and store in an airtight container in the fridge for up to two days If you prefer a room temperature bite take them out about thirty minutes before eating so the rice softens Avoid freezing as the rice can become dry and crumbly after thawing

Ingredient Substitutions

If you are out of Japanese mayonnaise regular mayo with a splash of rice vinegar and pinch of sugar works as a substitute Cooked chicken finely chopped or even egg salad can take the place of tuna For extra texture add diced cucumber or grated carrot mixing them in with the rice

Serving Suggestions

Tuna rice balls pair perfectly with miso soup or a fresh green salad For an extra kick serve with wasabi or drizzle with soy sauce My friend swears by wrapping each ball in an extra piece of nori for a more pronounced seaweed crunch You can even add pickled ginger on the side for a little zing

A bowl of rice with seaweed on top. Pin it
A bowl of rice with seaweed on top. | tastygusto.com

These rice balls are perfect for quick snacks or lunch prep that everyone will love!

Frequently Asked Questions

→ Can I use regular mayonnaise instead of Japanese mayo?

Yes, regular mayonnaise can be used, though Japanese mayo offers a richer, slightly tangier flavor and creamier texture.

→ What kind of seaweed is best for this dish?

Roasted nori sheets, torn or crumbled, provide the traditional flavor and ideal texture for mixing into the rice.

→ How do I ensure the rice balls hold their shape?

Packing the rice mixture tightly and handling it with damp or gloved hands helps keep the balls intact and prevents sticking.

→ Can I make these in advance?

They are best enjoyed fresh, but can be refrigerated for a few hours. Texture may change as the rice chills.

→ Are there variations I can try?

You can add chopped green onions, a dash of soy sauce, or sprinkle with sesame seeds for extra flavor.

Tuna Sesame Rice Balls

Tuna, sesame oil, and seaweed add bold flavors to creamy rice balls, perfect for quick snacks or lunches.

Prep Time
15 Minutes
Cook Time
~
Total Time
15 Minutes


Difficulty: Easy

Cuisine: Japanese

Yield: 4 Servings (8 rice balls)

Dietary: Gluten-Free, Dairy-Free

Ingredients

→ Main Ingredients

01 2 cups cooked sushi rice
02 150 grams canned tuna, drained
03 1 tablespoon toasted sesame oil
04 2–3 tablespoons Japanese mayonnaise (Kewpie style)
05 1 to 1.5 cups roasted seaweed, torn into small pieces

Instructions

Step 01

In a large mixing bowl, combine the sushi rice, sesame oil, Japanese mayonnaise, drained tuna, and torn roasted seaweed.

Step 02

Mix thoroughly until all ingredients are fully incorporated and the mixture is uniform in texture. If needed, add more mayonnaise for extra creaminess and cohesion.

Step 03

Press the mixture into a flat layer in the bowl. Use a spatula to segment it into 8 triangular portions resembling pizza slices. Alternatively, estimate equal portions by eye.

Step 04

With clean hands or gloves, scoop up each portion and gently shape it into a compact ball, ensuring each ball is tightly packed to maintain its structure.

Step 05

Present the rice balls at once for optimal texture and freshness. Serve unaccompanied or with preferred garnishes.

Notes

  1. Wet hands lightly with water to prevent rice from sticking while forming balls.

Tools You'll Need

  • Large mixing bowl
  • Mixing spatula
  • Measuring cups

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Contains fish (tuna), eggs (mayonnaise), and possible traces of sesame and soy in Japanese mayonnaise.

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 265
  • Total Fat: 8 g
  • Total Carbohydrate: 36 g
  • Protein: 9 g